Field regulation of single-molecule conductivity by a charged surface atom. Piva, P. G., DiLabio, G. A., Pitters, J. L., Zikovsky, J., Rezeq, M., Dogel, S., Hofer, W. A., & Wolkow, R. A. Nature, 435(7042):658–661, June, 2005. ![Field regulation of single-molecule conductivity by a charged surface atom [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Electrical transport through molecules has been much studied since it was proposed that individual molecules might behave like basic electronic devices, and intriguing single-molecule electronic effects have been demonstrated. But because transport properties are sensitive to structural variations on the atomic scale, further progress calls for detailed knowledge of how the functional properties of molecules depend on structural features. The characterization of two-terminal structures has become increasingly robust and reproducible, and for some systems detailed structural characterization of molecules on electrodes or insulators is available. Here we present scanning tunnelling microscopy observations and classical electrostatic and quantum mechanical modelling results that show that the electrostatic field emanating from a fixed point charge regulates the conductivity of nearby substrate-bound molecules. We find that the onset of molecular conduction is shifted by changing the charge state of a silicon surface atom, or by varying the spatial relationship between the molecule and that charged centre. Because the shifting results in conductivity changes of substantial magnitude, these effects are easily observed at room temperature.
@article{piva_field_2005,
title = {Field regulation of single-molecule conductivity by a charged surface atom},
volume = {435},
copyright = {© 2005 Nature Publishing Group},
issn = {0028-0836},
url = {http://www.nature.com/nature/journal/v435/n7042/full/nature03563.html},
doi = {10.1038/nature03563},
abstract = {Electrical transport through molecules has been much studied since it was proposed that individual molecules might behave like basic electronic devices, and intriguing single-molecule electronic effects have been demonstrated. But because transport properties are sensitive to structural variations on the atomic scale, further progress calls for detailed knowledge of how the functional properties of molecules depend on structural features. The characterization of two-terminal structures has become increasingly robust and reproducible, and for some systems detailed structural characterization of molecules on electrodes or insulators is available. Here we present scanning tunnelling microscopy observations and classical electrostatic and quantum mechanical modelling results that show that the electrostatic field emanating from a fixed point charge regulates the conductivity of nearby substrate-bound molecules. We find that the onset of molecular conduction is shifted by changing the charge state of a silicon surface atom, or by varying the spatial relationship between the molecule and that charged centre. Because the shifting results in conductivity changes of substantial magnitude, these effects are easily observed at room temperature.},
language = {en},
number = {7042},
urldate = {2012-07-09},
journal = {Nature},
author = {Piva, Paul G. and DiLabio, Gino A. and Pitters, Jason L. and Zikovsky, Janik and Rezeq, Moh'd and Dogel, Stanislav and Hofer, Werner A. and Wolkow, Robert A.},
month = jun,
year = {2005},
keywords = {DNA, RNA, astronomy, astrophysics, biochemistry, bioinformatics, biology, biotechnology, cancer, cell cycle, cell signalling, climate change, computational biology, development, developmental biology, drug discovery, earth science, ecology, environmental science, evolution, evolutionary biology, functional genomics, genetics, genomics, geophysics, immunology, interdisciplinary science, life, marine biology, materials science, medical research, medicine, metabolomics, molecular biology, molecular interactions, nanotechnology, nature, neurobiology, neuroscience, palaeobiology, pharmacology, physics, proteomics, quantum physics, science, science news, science policy, signal transduction, structural biology, systems biology, transcriptomics},
pages = {658--661},
}
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